Unpatchable Security Vulnerability in Apple’s M-Series Chipsets Allows Extraction of Secret Encryption Keys

  1. A new security vulnerability has been discovered in Apple’s M-Series chipset (M1, M2, M3) used in Mac and MacBook computers.
  2. The vulnerability is unpatchable and allows hackers to extract secret encryption keys via “GoFetch,” a side-channel attack.
  3. The attack exploits prefetchers, which predictively retrieve data and can be manipulated to reveal sensitive information.
  4. The vulnerability is due to the microarchitectural design of the chip, making it unfixable with a software update.
  5. Apple was informed of the issue on Dec 5, 2023, but has not yet addressed it.
  6. The vulnerability affects all new Apple computers released from late 2020 to the present.
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